Fans began speculating after pal Conrad Carr posted photos and videos to his Instagram story Monday that showed Cyrus in a white dress, cutting a cake alongside her movie star man. In Carr's post, Cyrus and Hemsworth were surrounded by family and friends.

Instagram hints

The singer posted a series of black-and-white, romantic photos of herself and her actor fiance on social media. In the photos, Cyrus is seen in a white dress and Hemsworth is dressed up in a suit and tie. Flowers, including an arrangement resembling a bouquet, are also seen behind them.

Cyrus' dress is tagged "viviennewestwood," suggesting it is by the British designer.

Two of the photos show the couple in a warm embrace while the third is a close-up of them kissing. Only one photo was shared with a simple caption: "10 years later ....."

A video clip posted by Carr on Monday shows the three Hemsworth brothers, Liam, Chris and Luke, taking a shot together with balloons that read "Mr. and Mrs." in the background. A photo also shows Cyrus's mom, Trish, looking casual in light jeans and a black top.

Others lamented the fact that Cyrus and Nick Jonas, who briefly dated as young teens while they were both Disney Channel stars, might have both gotten married this month – just not to each other.

This isn't the first time marriage rumors have popped up for the couple. Last March, Miley's dad, Billy Ray, tweeted a photo of her in a white dress with the caption "I'm so happy... you are happy."

Some fans wondered if this was a family celebration, rather than a wedding.

"I feel like miley and liam didn’t get married last night but a while ago and they just had a wedding party," a fan wrote. "finally both families were together for christmas so let’s celebrate the marriage too."

Other fans speculated perhaps the celebration was a rehearsal dinner.

"Actually the pics might be from a rehearsal dinner, judging by Tish’s clothes," one wrote. "Maybe the actual wedding is still coming today. I guess we’ll have to wait and see if this was the wedding or the wedding rehearsal."

Long-term couple lost California home

Cyrus and Hemsworth first met on the set of "The Last Song" in 2009 and announced their engagement in 2012 before a few years of on-again-off-again relationship rumors swirled. She began wearing her engagement ring again in early 2016, and the couple has been together since.

"They went through a lot and it’s obvious they are meant to be together," a fan tweeted. "Nothing rushed, just organic..."

"I am one of the lucky ones," Cyrus tweeted. "My animals and LOVE OF MY LIFE made it out safely & that's all that matters right now. My house no longer stands but the memories shared with family & friends stand strong."

Completely devestated by the fires affecting my community. I am one of the lucky ones. My animals and LOVE OF MY LIFE made it out safely & that’s all that matters right now. My house no longer stands but the memories shared with family & friends stand strong. I am grateful for

Hemsworth shared a photo of the aftermath and urged people to donate to the Happy Hippie Foundation, an organization Cyrus founded to help young LGBTQ people struggling with homelessness.

This story has been updated.

It’s been a heartbreaking few days. This is what’s left of my house. Love. Many people in Malibu and surrounding areas in California have lost their homes also and my heart goes out to everyone who was affected by these fires.

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Miley Cyrus has emerged as a voice of her generation: part singer, part provocateur, part philanthropist and all pop star. Look back at her through the years, including this shot of her at the 2018 Grammy Awards in January. Dan MacMedan, Dan MacMedan-USA TODAY NETWORK

New year, new icon: Madonna seemed to pass pop's mischief mantle over to Cyrus on Jan. 28, 2014, when mentor and mentee performed as a pair in Hollywood for "Miley Cyrus: MTV Unplugged." Jeff Kravitz, FilmMagic for MTV

Cyrus brought My Friend's Place representative Jesse up onstage while she accepted her award for Video of the Year for "Wrecking Ball" at the MTV Video Music Awards in August 2014. ROBYN BECK, AFP/Getty Images

Cyrus snuck a kiss with Patrick Schwarzenegger, who she dated following her breakup with Hemsworth, during the game between the California Golden Bears and the USC Trojans at Los Angeles Memorial Coliseum in November 2014. Harry How, Getty Images

Cyrus performed "The Climb" during the anti-gun March for Our Lives rally organized by survivors of the Marjory Stoneman Douglas High School shooting in March in Washington, DC. Chip Somodevilla, Getty Images